/*
 * Copyright (c) 2006 Hyperic, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.foodoon.monitor.agent.test;

import org.hyperic.sigar.ProcState;
import org.hyperic.sigar.Sigar;
import org.hyperic.sigar.SigarException;

/*

Example to show the process state for a given pid.

Compile the example:
% javac -classpath sigar-bin/lib/sigar.jar ProcessState.java

State of the java process running the example:
% java -classpath sigar-bin/lib/sigar.jar:. ProcessState
java: Running

State of the bash shell when invoking the example is running:
% java -classpath sigar-bin/lib/sigar.jar:. ProcessState $$
bash: Sleeping

State of emacs editor used to write the example:
% java -classpath sigar-bin/lib/sigar.jar:. ProcessState 2673
emacs: Suspended

See also: examples/Ps.java, examples/Top.java

*/

public class ProcessState {

    private static String getStateString(char state) {
        switch (state) {
            case ProcState.SLEEP:
                return "Sleeping";
            case ProcState.RUN:
                return "Running";
            case ProcState.STOP:
                return "Suspended";
            case ProcState.ZOMBIE:
                return "Zombie";
            case ProcState.IDLE:
                return "Idle";
            default:
                return String.valueOf(state);
        }
    }

    public static void main(String[] args) throws SigarException {

        String pid;
        if (args.length == 0) {
            pid = "$$"; //default to this process
        } else {
            pid = args[0];
        }

        Sigar sigar = new Sigar();

        ProcState procState = sigar.getProcState(pid);
        String state;

        System.out.println(procState.getName() + ": " + getStateString(procState.getState()));

        sigar.close();
    }
}
